“In restoring the gospel, God againgave the priesthood to men. John the Baptist came… to ordain… to the Aaronic Priesthood… Then Peter, James, and John… came and gave… the Melchizedek Priesthood. Through the Restoration the priesthood was returned to the earth.” —Gospel Principles, p. 111

If Mormonism has “restored” the Aaronic and Melchizedek Priesthoods, why is its version different from the Biblical version?